Question

define aparent depth and normal shift

Answer 1

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here is ur answer
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NORMAL SHIFT. The apparent shift in the position of an object placed in one medium and viewed along the normal, from the other medium.
➡Apparent depth is the depth that a transparent material such as water or glass appears to have, when viewed from above. When light rays pass through a different medium, having different refractive index, it undergoes refraction.

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